Vehicle brake



Aug. 14, w23. M6498@ Y. R. z. FARMER v VEHICLE BRAKE Filed June 7, 1920 mme/l I 4ofwhich the .following is' a specification, referencev being had to theaccompanying drawvmore particularly to a device of this general Patenten aan.. ia, iaaa.- 1

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nppiicaiin ala 'June 7,.

To aZZ if may concern: A

Be it known that I, ROBERT Z. FARMER, a citizen of the United State of regon, have invented certainnew andV useful lmprovements in Vehicle Brakes,

ms .i i hisy invention relates to certain improvements in :vehicle brakes and has relation character' embodying two -coaching disks, one being movable axially'with respect to the-other,l and it is an-objectof the invention to provide a device of -this general' 'character with noveland improved means @whereby the requisite relative movement `may' be imparted to one of the disks-with re'spect to the other. A

t is also an object'oftheinvention to provide a novel and improved device of this general character embodying two disks, one

--movable axially/ With respect to the other,

vmovable disk is caused to travel in substantogether .with means .whereby the axially -tially a Afixed' path, -with the possibility of the same binding on its support being 'sub-A stantially entirelyeliminated- Another object ofthe invention is to pro- 1 vide a novel and improved. brake of` this re uired. Y

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l'construction and in' the combination and general. character embodying two disks, one movable axially 'with respect to the other, together with loperatingmeans tor theaxial lymovable-diskwhereby the same maybe caused t'o move in'opposite directions as he invention consists inl the details of varrangement of thefseveral parts of my iniproved vehicle brake whereby certain. 1m`

portant advantages are attained and'the-de- 'accompanying drawings, wherein:

-vice renderedvsi-mple, non-expensive and Figure 1 is a diagrammatic view in `to plan illustrating -a brakel mechanism con- States, V residing atf Roseburg() in the county of" -Douglas and horizontal section and [wardly fof the axle ieee." seriai iig. aaneen.

structed in accordance with an embodiment of my invention and in applied position.

Figure 2 is i an enlarged fragmentary View partly .in' section. and partly in elevation illustrating the brake mechanism constructed-in accordance with an embodiment of my invention, said section being vertical.

Figure 31s a fragmentary view `partly in of the mechanism as illustrated in Figure 2. Figure a is a fragmentary view. partly in j side elevation and partly in section illustrat ing the means for holding the axially movable disk against rotary movement, and' Figure 5 is an enlar ed fragmentary View partly in section 'an partly in elevation illustrating in'detail a portion of the means for imparting movement-tothe 'axially'mow able disk.

Ars disclosedin the" accompanying drawings, Cdenotes the chassis or frame of a vehicle with which -coacts anA axle Aof a conventional type which,y in' the present embodiment 'of my invent1on,-has its central portionangular in'cross section with each of its extremities ,provided with a spindle. S uponA which is mounted a supporting wheel W.

Fixed tothe inner face .of each of the wheels W is a disk D, preferably of -crucible steel, which has its 'marginal portion' definediby an annular flange 1 extendinginr A. The inner face of I the disk D within the field defined bythe flange l is plane'. In the presentembodiment of my invention, Athe disk D 'is held in applied position upon a wheel'W by the anchoring screwsQ with the headsthereof flushwth the inner face of the disk D, al-

partly in top plan i though it is to be understood that the'disk' i l -D may be heldin applied position in any manner which will comply with the requirementsl of practice.

yM denotes a disk preferably of bronze provided at its center with an opening 3 of a configuration conformingto' the cross sec` tional-configuration of the angular portion of the axle A but slightly larger, so that said disk M may have axial movement longitudinally of the axle A. Mounted within the upper and lower edges of the openica ing' 3- are the'anti-friction members'there in disclosed as-roller bearingsA which coact with the upper. and lower portions'of the vention extends upwardly' and forwardly with respect to the chassis orfra'me C and is secured as at 7 to the chassis or frame C at a desired point in advance of the axle A..

A pivotal connection 8 .between the sections comprised inthe articulated'arm 6 is such as. to p'ermit'the sections of said arm to have relative. swinging lmovement 1n afvertical direction but have no relative movement in a horizontal or transverse direction other than is permitted by the inherent resiliency possessed by the sections of said arm.- 'The y arm 6 serves to hold thefdisk M against rotary movement about its axis or more particularly with respect to the axle A s o that vsaid member M is prevented from-binding yupon the axle A so that at all times the disk- .M is positively maintainedin. a position to permit the same to have free and unobstructed movement in a direction lengthwise of the axle A.- By having the arm 6 to 4prevent rotary movement ol' the disk M, positive means are provided' to prevent turning strain upon the axle A@ and articularly vwhen the disk or member ll is brought into working contact with the diskl D so that by the use of the arm 6 it is not necessary to employany additional-means vfor strengthening the springs comprised in the vehicle structure.- 4lhe face of the mem- Y ',ber M contacting with 'thedisk or member A D is also plane. l u ln the present embodiment of my inven-v I tion, it ispdesired that both of the disks or 'members M beaxially moved in unison and oi' necessity in opposite directions and as herein embodied the axle .d inwardly of the spindles S thereof and the disks or members M is provided with the rearwardly -di'- rected brackets 9, each of said-brackets comrising a pair 'of `vertically spaced ears 9a.

ivotally supported between the ears Stof each ofthe brackets 9 is-an end portion of a lever .10 extending inwardly and rearwardly and having its innei`v end portion operatively connected as at 11 with a connecting or tie rod 12, said rod 12 being comlimon to bothof the levers 10. Pivotally engaged with the central portion of 'the tie rod 12 is a yoke or fork 14.- extending forwardly of therod 12 and straddling the axle A, whereby said yoke or fork 14 is pertorock the levers 10 as required.

' The yoke or fork 14 is carried by an end portion of an elongated rigid member or bar 15 andasherein embodied and as partict ooo ularly illustrated lin Figure y1, the forward end portion ot the bar 15 is. operatively engaged with `the ulcrum bar 16 adapted to be swung in any manner which best meets with' the requirements of practice and 'preferably through the instrumentality oit the operating mechanism particularly-illustrated and described in my co-pending a plication tiled I.lune-7, 1920, Seriall o.-

vach of thel levers 10. outwardly 'of yits pivotal connection 17 with theears 9a of the bracket 9 is provided with a fork having its y -arms 18 vertically spaced and referably positioned above and below the a e A. The arms 18 .have their."l outer margins formed into the cam laces'19 which have contact with the disk M at pointsvabovel and below` the axle A, so that upon movement ot the bar 15 in one direction, each lof the levers 10 .will be swung in a manner to cause `the cam faces 19er the arms 18 to ride upon and contact-,with the adjacent laces of the disks or members M, whereby said disks or members M are axially moved into trictional engagement with the disks D whereby an edective braking action isobtained.

A side 'lace ot'each of the arms 18 is pro- -vided adjacent the outer end oit the cam tace y 19 with a cam slot 20'substantially conforming'with the adjacent portion ot the cam Y face 19 and. fitting 'within said cam groove 20' is an angular lug 21 so that when the bar 15 lis moved 4in 'a direction to ell'ect a, release,

.positive means thusbeing provided tor `moving each ot' the disks or members M out of contact with the adjacent disk D. l

ln practice, itis only necessary that the full extent of movement ot the disks ormembers M be no more than one-eighthA of lll@ an inch, although ll do not wish to be understood as limiting myself in this respect A as under' certain conditions this `extent ont movement may, ot' necessity, have to be increased. i

From the foregoing description it is thought tobe obvious that a vehicle brake constructed in' accordance with my inven- .tion is particularly well adapted for use by reason of the convenience and facility with which it may be assembled and operated, and it will also be obvious that my invention is susceptible-of some change and modiiication without departnig from the princi les and spirit thereor" and for this reason do not wish to be understood as limiting my- "self to the precise arrangement and formation of the several parts herein shown in carrying out my inventionv in practice exce t as hereinafter claimed. mitted to have suliicient endwise movement claim:

l. A. braking mechanism includin a ro- Laeaeeo movable disk by direct thrust in one direction and by pull in the opposite direction. 2. A braking vmechanism comprising a rotary disk, an axially movable disk coacting therewith, a cam member supportedv adjacent the axially movable disk, means for operating said cam member, said cam mem-.

ber upon movement in one direction forcing the axially movable disk`into contact with the rotary disk, and coactingr means carried vby the axially movable disk and the cam member for imparting movement to the axially movable` disk away from the rotary disk upon movement of the cam member in the o posite direction. 3. braking mechanism comprisinga .rotating disk, an axially movable dlsk coacting wtherewith,`a cam member supported'adjacent Athe axially movable disk and contacting therewith to move the same into frictionalA cam member, said cam member and axially movable disk being provided with a coacting cam slot and lug for imparting movement to the axially movable disk away from the rotating disk upon movement of the cam member in the opposite direction.

4. lin combination with a vehicle body, a supporting axle coacting therewith, and a Wheel mounted upon the axle, of a disk secured to and rota-ting' with the wheel, a disk mounted on the vaxle and having axial movement lengthwise of the axle toward or from the disk carried by the wheel, means for imparting axial movement to said second named disk, and an varticulated member operatively engaged with the second named disk and the frame of the vehicle for holding said second named disk against rotary movement. l

lin testimony whereof l hereunto ax my signature.

nonna'r a. manne.

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